High performance impact-resistant audio signaller, suitable for installation in industrial environments with a particularly high level of background noise. 64 tones available. Sound power 120 dB, absorption 120-550 mA (depending on the selected tone), power supply 10 to 60 Vdc. Convenient click-fit mounting onto the base. Operating temperature -25 to +70°C. Material: ABS. IP66 protection rating. Approved to EN 54-3.